@article{ref1,
title="Validation of a Targeted Peer Relations Scale for Adolescents Treated for Substance Use Disorder",
journal="Substance abuse: research and treatment",
year="2011",
author="Ciesla, James R. and Yao, Ping",
volume="5",
number="online",
pages="35-44",
abstract="The objective of this research is to use item response theory (IRT) to validate a 14-item peer relations scale for use in the adolescent treatment population. Subjects are 509 adolescents discharged from substance abuse treatment from 2004-2009. The person reliability is 0.76 and the Cronbach's alpha person raw score reliability is 0.93 both indicating the scale is a strong metric. The item reliability of 0.99 is high showing the model is reliable. The real separation (8.49) meaning items are placed on the Rasch &quot;ruler&quot; with about eight levels of importance identified. The mean-square statistics of the infit and outfit values were between 0.5 and 1.5 for the items indicating a low level of randomness and thus unidimensionality of the scale. Inspection of a Wright Item Map shows the hierarchical structure of the scale with a moderate degree of inter-item spread. The analysis shows the scale is a reliable unidimensional metric.<p />",
language="",
issn="1178-2218",
doi="10.4137/SART.S7367",
url="http://dx.doi.org/10.4137/SART.S7367"
}